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Sensitive absolute-gravity gradiometry using atom interferometry
Open accessAbstract
We report the demonstration of a sensitive absolute-gravity gradiometer based on light-pulse atom-interference techniques. The gradiometer consists of two absolute accelerometers operated in a differential mode. We report a differential acceleration sensitivity of $4\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}9}g/{\mathrm{Hz}}^{1/2}$ and an inferred differential acceleration accuracy of less than ${10}^{\ensuremath{-}9}g.$ This corresponds to a gravity-gradient sensitivity of $4E/{\mathrm{Hz}}^{1/2}$ ${(1E=10}^{\ensuremath{-}9}{\mathrm{s}}^{\mathrm{\ensuremath{-}}2})$ and an accuracy of better than $1E$ for a 10-m separation between accelerometers. We demonstrate that the instrument can be used to detect nearby masses in a vibrationally noisy environment and characterize instrument sensitivity to spurious acceleration and rotation noise.
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Citations
Cites
Quantum projection noise: Population fluctuations in two-level systems
Itano, W. M., Bergquist, J. C., Bollinger, J. J., Gilligan, J. M., Heinzen, D. J., Moore, F. L., Raizen, M. G., & Wineland, D. J. (1993) · Physical Review A · doi:10.1103/physreva.47.3554 · Cited by 613
Metadata
- Authors
- McGuirk, J. M., Foster, G. T., Fixler, J. B., Snadden, M. J., & Kasevich, M. A.
- Venue
- Physical Review A
- Publisher
- American Physical Society (APS)
- Published
- 2002-02-08
- Volume
- 65
- Issue
- 3
- ISSN
- 0556-2791 (ISSN-L)
- 1050-2947
- 1094-1622
- OpenAlex
- W2046351224
- Cited by
- 586
- References
- 1
- FWCI
- 11.28
- Type
- journal article
- Language
- en
- Open access
- green
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- McGuirk, J. M., Foster, G. T., Fixler, J. B., Snadden, M. J., & Kasevich, M. A. (2002). Sensitive absolute-gravity gradiometry using atom interferometry. Physical Review A. https://doi.org/10.1103/physreva.65.033608
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